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Chevrolet Workshop Service and Repair Manuals

A/C Refrigerant Pressure Sensor|Page 3631 > < A/C Refrigerant Pressure Sensor
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A/C Signal: Description and Operation
A/C Request Signal

OPERATION

This signal tells the Powertrain Control Module (PCM) the A/C selector switch is turned "ON," and that the A/C refrigerant pressure switch is
closed.

The PCM uses this to adjust idle speed before turning "ON" the A/C clutch. If this signal is not available to the PCM, the A/C compressor will be
inoperative.

A/C Refrigerant Pressure Sensor|Page 3631 > < A/C Refrigerant Pressure Sensor